package chapter05.Example3;

public class Example03 {
    public static void main(String[] agrs) {
        String str = "abcd";
        System.out.print("将字符串转换为字符数组后的结果");
        char[] charArray = str.toCharArray();
        for (int i=0; i<charArray.length;i++){
            if (i !=charArray.length - 1){
                System.out.println(charArray[i]+",");
            } else{
                System.out.println(charArray[i]);
            }
        }
        System.out.println("将int值转换为String类型之后的结果："+String.valueOf(12));
        System.out.println("将字符串转换成大写之后的结果:"+str.toUpperCase());
        System.out.println("将字符串转换成大小写字母之后的结果："+str.toLowerCase());

    }
}
